Neonatal Death in India: Birth Order in a Context of Maternal Undernutrition
研究发现印度新生儿死亡率异常高，且出生顺序效应独特：后出生的婴儿存活率远高于先出生的，这与印度母亲营养不良状况随生育进程改善有关。
Abstract We document a novel fact about neonatal death, or death in the first month of life. Globally, neonatal mortality is disproportionately concentrated in India. We identify a large effect of birth order on neonatal mortality that is unique to India: later-born siblings have a steep survival advantage relative to the birth-order gradient in other developing countries. We show that India’s high prevalence of maternal undernutrition and its correlation with age and childbearing can explain this pattern. We find that Indian mothers exit the underweight body mass range at an internationally comparatively high rate as they progress through childbearing careers.